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參數(shù)資料
| 型號(hào)： | AD8345AREZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 調(diào)制器/解調(diào)器 |
| 英文描述： | 140 MHz - 1000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR |
| 封裝： | MO-153ABT, TSSOP-16 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 1013K |
| 代理商： | AD8345AREZ-REEL7 |
AD8345
Rev. B | Page 15 of 20
210
Ω
140
Ω
140
Ω
PHASE
SPLITTER
VOUT
IBBP
IBBN
QBBP
QBBN
AD8345
LOIP
LOIN
VPS1
VPS2
IOUTB
IOUTA
2
2
LATCH
"Q"
DAC
"I"
DAC
LATCH
"I"
QOUTA
0.1
μF
RSET
2k
Ω
REFIO
FS ADJ
SLEEP
SELECT
WRITE
CLOCK
AD9761
MUX
CONTROL
AVDD
DVDD
DCOM
QOUTB
DAC
DATA
INPUTS
210
Ω
140
Ω
140
Ω
Σ
00
932-
0
31
Figure 31. AD8345/TxDAC Interface
SOLDERING INFORMATION
The AD8345 is packaged in a 16-lead TSSOP_EP package. For
optimum thermal conductivity, the exposed pad can be
soldered to the exposed metal of a ground plane. This results in
a junction-to-air thermal impedance (θJA) of 30°C/W. However,
soldering is not necessary for safe operation. If the exposed pad
is not soldered down, then the θJA is equal to 95°C/W.
EVALUATION BOARD
Figure 32 shows the schematic of the AD8345 evaluation board.
Note that uninstalled components are marked as open. This is a
4-layer board, with the two center layers used as ground plane,
and top and bottom layers used as signal and power planes.
The board is powered by a single supply (VS) in the range 2.7 V
to 5.5 V. The power supply is decoupled by 0.01 μF and 1000 pF
capacitors. The circuit closely follows the basic connection
schematic with SW1 in Position B. If SW1 is in Position A, the
enable pin (ENBL) is pulled to ground by a 10 kΩ resistor, and
the device is in its power-down mode.
All connectors are SMA-type. The I and Q inputs are dc-coupled to
allow a direct connection to a dual DAC with differential outputs.
Resistor pads are provided in case termination at the I and Q inputs
is required. The local oscillator input (LO) is terminated to approxi-
mately 50 Ω with an external 50 Ω resistor to ground. A 1:1 wide-
band transformer (ETC1-1-13) provides a differential drive to the
AD8345’s differential LO input.
16
1
IBBP
QBBP
15
2
IBBN
QBBN
14
3
COM3
13
4 COM1
COM3
12
5
LOIN
VPS2
11
6
LOIP
VOUT
10
7
VPS1
COM2
9
8
ENBL
COM3
AD8345
IP
IN
C3
0.01
μF
C4
1000pF
VPOS
QP
QN
C5
1000pF
C6
0.01
μF
VPOS
VOUT
C7
1000pF
R2
(OPEN)
R1
(OPEN)
R7
0
Ω
R12
0
Ω
R11
0
Ω
SW1
A
VPOS
B
R8
10k
Ω
ENBL
R10
(OPEN)
R14
(OPEN)
R15
(OPEN)
R9
(OPEN)
1
T1
ETC1-1-13
2
3
4
5
LO
R6
50
Ω
C1
1000pF
C2
1000pF
00932-
032
Figure 32. Evaluation Board Schematic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8346ARUZ-REEL | 800 MHz - 2500 MHz RF/MICROWAVE I/Q MODULATOR |
| AD8346ARUZ-REEL7 | 800 MHz - 2500 MHz RF/MICROWAVE I/Q MODULATOR |
| AD8347ARUZ | 800 MHz - 2700 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR |
| AD8347ARUZ-REEL7 | 800 MHz - 2700 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR |
| AD8349AREZ-RL7 | 700 MHz - 2700 MHz RF/MICROWAVE QPSK MODULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8345AREZ-RL7 | 功能描述:IC MOD QUAD 300-1000MHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調(diào)制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:調(diào)制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測(cè)試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8345-EVAL | 制造商:Analog Devices 功能描述:AD8345 EVALUATION BOARD - Bulk |
| AD8345-EVALZ | 制造商:Analog Devices 功能描述:EVAL KIT FOR 140 MHZ TO 1000 MHZ QUADRATURE MODULATOR - Bulk |
| AD8346 | 制造商:AD 制造商全稱:Analog Devices 功能描述:300 MHz to 1000 MHz Quadrature Modulator |
| AD8346AF-EMX | 制造商:Analog Devices 功能描述:- Rail/Tube |
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